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27,762 Article Results

The Prediction of Optimal Route of City Transportation Based on Passenger Occupancy using Genetic Algorithm: A Case Study in The City of Bandung

10.12928/telkomnika.v16i3.7077
Sri Suryani; Telkom University Prasetiyowati , Yuliant; Telkom University Sibaroni , Derwin; Telkom University Prabangkara
Currently, the existence of city transport is increasingly eliminated by private vehicles such as cars and motorcycles. This situation is further exacerbated by the behavior of city transport drivers who are less discipline in driving, or in picking up and dropping off their passengers. The bad behavior is partly caused by the low level of passenger occupancy. The drivers try to search for passengers as much as possible but often ignore the traffic rules. To overcome this problem, an optimal transport route with high passenger potential is required. Therefore, this study investigated the optimal route of city transport based on the passenger occupancy rate in the city of Bandung as the case study. The method employed for determining the optimal route is Genetic algorithm combined with Ordinary Kriging method used for the process of passenger prediction and fitness calculation. The optimal routes are those with higher occupancy rate. The analysis results showed that the use of the Genetic algorithm with a low number of generations succeed in creating new optimal routes even though the increase is not too high the maximum only reaches 4%.This result is certainly important enough to be used in making better public transport routes.
Volume: 16
Issue: 3
Page: 1201-1207
Publish at: 2018-06-01

Synchronous Mobile Robots Formation Control

10.12928/telkomnika.v16i3.8397
Mohd Razali; Universiti Teknikal Malaysia Melaka Mohamad Sapiee , Khalil Azha; Universiti Teknikal Malaysia Melaka Mohd Annuar
Synchronous mobile robots formation control is one of the most challenging and interesting fields in robotics. The mobile robots communicate with each other through wireless communication to perform similar movement. This study analyzed two mobile robots that can perform synchronous movement along a shaped path. A square shape is set as a path for the mobile robot movements. The front robot being the leading robot transmits the instruction of its movement to the robot behind it, acting as the following robot through a wireless communication. The instruction sent by the leading robot is received by the following robot through a program embedded in the leading robot microcontroller which then drives the following robot to move and imitates the movement of the leading. The algorithm for the movement is tested on the hardware and the results of the experiment are included to verify the effectiveness of the proposed method.
Volume: 16
Issue: 3
Page: 1183-1192
Publish at: 2018-06-01

Algorithm to Convert Signal Interpreted Petri Net Models to Programmable Logic Controller Ladder Logic Diagram Models

10.11591/ijeecs.v10.i3.pp905-916
Z. Aspar , Nasir Shaikh-Husin , M. Khalil-Hani
Signal Interpreted Petri Nets (SIPN) modeling has been proposed as an alternative to Ladder Logic Diagram (LLD) modeling for programming complex programmable logic controllers (PLCs) due to its high level of abstraction and functionalities. This paper proposes an algorithm to efficiently convert existing SIPN models to their LLD models equivalences. In order to automate and speed up the conversion process, matrix calculation approach is used. A complex SIPN model was used to show that existing conversion technique must be expanded in order to cater for a more complex SIPN models.
Volume: 10
Issue: 3
Page: 905-916
Publish at: 2018-06-01

Interpretability Evaluation of Annual Mosaic Image of MTB Model for Land Cover Changes Analysis

10.12928/telkomnika.v16i3.9331
Muhammad; Ministry of Research, Technology, and Higher Education; and University of Indonesia Dimyati , Ratih Dewanti; LAPAN and Gadjah Mada University Dimyati , Kustiyo; LAPAN Kustiyo , Projo; LAPAN and Gadjah Mada University Danoedoro , Hartono; LAPAN and Gadjah Mada University Hartono
To verify whether the annual mosaic image of MTB model is acceptable for further digital analysis, it is necessary to evaluate the visual interpretability. The MTB model is an effort to integrate multi-scene and multi-temporal data, to obtain a minimum cloud cover mosaic image in locations that are often covered by clouds and haze. This study is to evaluate the interpretability of the annual mosaic image for analysis of the land cover changes. The data used are the images of 2015, 2016, and 2017 covers a part of central Sumatra. Visual interpretations with a series of steps are used, starting with identification of the objects using interpretation keys, followed by spectral band correlations, scattergram analysis, and ended by consistency assessment. The consistency assessment step is performed to determine the level of clearness and easiness of the object recognition in the annual mosaic images. The results showed that the most optimal spectral bands used for RGB combinations for visual interpretation were Band SWIR-1, Band NIR, and Band Red. Based on the evaluation results, the annual mosaic image of MTB model performed the consistent results of the clearness objects and the easiness of the object recognition. Thus the annual mosaic image of MTB model of 0.02x0.02 degree tile is acceptable for further digital processing as well as digital land cover analysis.
Volume: 16
Issue: 3
Page: 934-945
Publish at: 2018-06-01

A New CMOS Fully Differential Low Noise Amplifier for Wideband Applications

10.12928/telkomnika.v16i3.7630
Majid; University of Birjand Takbiri , Hadi; University of Birjand Zarei , Abolfazl; University of Birjand Bijari
In this paper, a multi-stage fully differential low noise amplifier (LNA) has been presented for wideband applications. A common-gate input stage is used to improve the input impedance matching and linearity. A common-source stage is also used as the second stage to enhance gain and reduce noise. A shunt-shunt feedback is employed to extend bandwidth and enhance linearity. The proposed low noise amplifier has been designed and simulated using RF-TSMC 0.18 μm CMOS process technology. In frequency band of 3.5-7.5 GHz, this amplifier has a flat power gain (S21) of 16.5 ± 1.5 dB, low noise figure (NF) of 3dB, input (S11) and output (S22) return losses less than -10 dB and high linearity with input thirdorder intercept point (IIP3) of -3dBm. It’s power consumption is also less than 10 mw with low power supply voltage of 0.8v.
Volume: 16
Issue: 3
Page: 1083-1091
Publish at: 2018-06-01

A Review of Hybrid Battery Management System (H-BMS) for EV

10.12928/telkomnika.v16i3.8743
Nur Huda; Universiti Teknikal Malaysia Melaka Mohd Amin , Mohd Ruddin; Universiti Teknikal Malaysia Melaka Ab Ghani , Auzani; Universiti Teknikal Malaysia Melaka Jidin , Zanariah; Universiti Teknikal Malaysia Melaka Jano , Tole; Universitas Ahmad Dahlan Sutikno
Significant to a major pollution contributor in passenger vehicles, electric vehicles are more acceptable to use on the road. Electric Vehicles (EVs) burn energy based on the usage of the battery. The usage of the battery in EVs is monitored and controlled by Battery Management System (BMS). A few factors monitor and control Battery Management System (BMS). This paper reviewed the battery charging technology and Remote Terminal Unit (RTU) development as a Hybrid Battery Management System (H-BMS) for Electric Vehicle (EV).
Volume: 16
Issue: 3
Page: 1004-1012
Publish at: 2018-06-01

Antenna Azimuth Position Control System using PID Controller & State-Feedback Controller Approach

10.11591/ijece.v8i3.pp1539-1550
Aveen Uthman , Shahdan Sudin
This paper analyzed two controllers with the view to improve the overall control of an antenna azimuth position. Frequency ranges were utilized for the PID controller in the system; while Ziegler-Nichols was used to tune the PID parameter gains. A state feedback controller was formulated from the state-space equation and pole-placements were adopted to ensure the model design complied with the specifications to meet transient response. MATLAB Simulink platform was used for the system simulation. The system response for both the two controllers were analyzed and compared to ascertain the best controller with best azimuth positioning for the antenna. It was observed that state-feedback controller provided the best azimuth positioning control with a little settling time, some value of overshoot and no steady-state error is detected.
Volume: 8
Issue: 3
Page: 1539-1550
Publish at: 2018-06-01

On the High Dimentional Information Processing in Quaternionic Domain and its Applications

10.11591/ijaas.v7.i2.pp177-190
Sushil Kumar , Bipin Kumar Tripathi
There are various high dimensional engineering and scientific applications in communication, control, robotics, computer vision, biometrics, etc.; where researchers are facing problem to design an intelligent and robust neural system which can process higher dimensional information efficiently. The conventional real-valued neural networks are tried to solve the problem associated with high dimensional parameters, but the required network structure possesses high complexity and are very time consuming and weak to noise. These networks are also not able to learn magnitude and phase values simultaneously in space.  The quaternion is the number, which possesses the magnitude in all four directions and phase information is embedded within it. This paper presents a well generalized learning machine with a quaternionic domain neural network that can finely process magnitude and phase information of high dimension data without any hassle. The learning and generalization capability of the proposed learning machine is presented through a wide spectrum of simulations which demonstrate the significance of the work.
Volume: 7
Issue: 2
Page: 177-190
Publish at: 2018-06-01

Selecting User Influence on Twitter Data Using Skyline Query under MapReduce Framework

10.12928/telkomnika.v16i3.4624
Ahmad Luky; Institut Pertanian Bogor Ramdani , Taufik; Bogor Agricultural University Djatna , Heru; Bogor Agricultural University Sukoco
The aim of this research was to select and identify user influence on Twitter data. In identification stage, the method proposed in this study was matrix Twitter approach, sentiment analysis, and characterization of the opinion leader. The importan characteristics included external communication, accessibility, and innovation. Based on these characteristics and information from Twitter data through matrix Twitter and sentiment analysis, a algorithm of skyline query was constructed for the selection stage. Algorithm of skyline query selected user influence by comparing with other users according to values of each characteristic. Thus, user influence was indicated as user that was not influenced by other users in any combination of skyline objects. The use of MapReduce framework model in identification and selection stage, support whole operation where Twitter had big size data and rapid changes. The results in identification and selection of user influence exhibited that MapReduce framework minimized the execution time, whereas in parallel skyline query could reveal user influence on the data.
Volume: 16
Issue: 3
Page: 1416-1425
Publish at: 2018-06-01

Smart Garage Implementation and Design Using Whatsapp Communication Media

10.12928/telkomnika.v16i3.8063
Rendy; Telkom University Munadi , Arief; Telkom University Rakhman , Doan; Telkom University Perdana
WhatsApp is a social networking app that serves as a communication medium. According to the Online Audience Measurement Standards named comScore, in 2017, WhatsApp application users in Indonesia amounted to 35.8 million people. As the most popular mobile application with the most users in the country, in this research the authors chose Whatsapp as a communication medium that will be integrated into one application of Internet of Things (IoT), that is Smart Garage. Smart Garage is a combination of information technology and computing technology that is applied to a house by relying on efficiency and device automation. The results of this research shows that it is better to use mobile data networks than using the wireless networks. The maximum delay when using mobile data is 7.5 s and 7.7 s when using wireless networks. The research using WhatsApp application still rare especially in the field of IoT.
Volume: 16
Issue: 3
Page: 1107-1113
Publish at: 2018-06-01

The Effect of Tender Coconut Water on Free Radical Due to Mercury Exposure

10.11591/ijphs.v7i2.11849
Siti Thomas Zulaikhah , Joko Wahyu Wibowo
Mercury pollution can results from gold mining. Furthermore, a continuous mercury exposure can trigger the formation of Reactive Oxygen Species (ROS) and interfere with the body's antioxidant metabolism. A high level of free radicals in the body can be characterized by a low level of an antioxidant enzyme. Prevention to avoid the impacts of mercury poisoning is better than treatment. Tender coconut water can eliminate ROS and improve antioxidant status. This study aimed to was to confirm that tender coconut water is able to decrease the free radical which is characterized by increased antioxidant enzyme GPx status. This study was designed as randomized pre- and posttest control group design, 40 traditional gold mining workers devided into 2 groups: the control and treatment groups. After the pre test of GPx level, the workers were either given tender coconut water at the dose of 450 m L or water for 4 weeks every day. Four weeks after the pre-test, the level of GPx was assessed in the laboratory PAU-Gajahmada University. The post test results of the control group and treatments group were compared and analyzed using Man Whitney test. The mean levels of GPx post-test in the control group and treated group were 63.5±1.1 U/mL and 79.9±8.8 U/mL respectively. The analysis result obtained p-value 0.000 <0.05. Tender coconut water has an effect on free radicals due to to mercury exposure. Tender coconut water can be consumed daily to prevent degenerative diseases caused by mercury exposure.
Volume: 7
Issue: 2
Page: 102-106
Publish at: 2018-06-01

Trajectory and Determinant of Functional Independence among Patient with Traumatic and Non-Traumatic Spinal Cord Injury

10.11591/ijphs.v7i2.13249
Yudha Mathan Sakti , Astri Ferdiana , Dananjaya Putramega , Zikrina A. Lanodiyu , Galih Prasetya Sakadewa , Rahadyan Magetsari
The level of functional independence was directly proportional to life satisfaction and quality of life in patients with spinal cord injury. By knowing the determinants that predict changes in functional independence, medical treatment and rehabilitation can be better planned to improve the patient’s quality of life. We conducted a prospective cohort study on 49 patients with spinal cord injury at Dr. Sardjito general hospital Yogyakarta from April to June 2016. The data were taken before patient underwent surgery, before discharged from the hospital, and 3 months after underwent surgery. We found that most common spinal cord injury was at the level of lumbar vertebra with 28 patients (58%). There was a positive trajectory of the patients with spinal cord injury with ASIA grade B-E classification. However, patients with spinal cord injury with ASIA classification grade A have a neutral trajectory.We conclude there was a positive trajectory between functional independence and traumatic or non-traumatic spinal cord injury except in patients with ASIA grade A classification spinal cord injury. The determinants that affected the trajectory of patients with spinal cord injury were the level of the injured vertebra and severity of the neurological deficit. 
Volume: 7
Issue: 2
Page: 145-150
Publish at: 2018-06-01

Compact Meander Line Telemetry Antenna for Implantable Pacemaker Applications

10.11591/ijeecs.v10.i3.pp883-889
N. H. Sulaiman , N. A. Samsuri , M. K. A. Rahim , F. C. Seman , M. Inam
The demand for health technology is increasing rapidly especially in telemetry applications. These applications generally use implanted antennas to be utilized for data transfer from patients to another reader device. This procedure can make the health care more efficient, since it provides fast diagnosis and treatment to the patient. This work presents a design of telemetry antenna to be used in Pacemaker application in Medical Implant Communication Services (MICS) (401 MHz-406 MHz). By introducing Compact Meander Line Telemetry Antenna (CMLTA), length (Ls) and width (Ws) of substrate have been reduced by 36.84% and 40% respectively. The proposed antenna offers advantages of easy fabrications, low cost and light weight with a 133 MHz bandwidth.
Volume: 10
Issue: 3
Page: 883-889
Publish at: 2018-06-01

The Effect of Kangaroo Mother Care Method toward Weight Gain and Length of Stay among Low Birth Weight Baby

10.11591/ijphs.v7i2.12632
Muliani Muliani , Lisnawati Lisnawati
Infant mortality needs to get serious attention. Special efforts are relatively easy and inexpensive in the handling and care is through treatment methods can improve the stability ofKangaroo Mother Care(KMC) for babies and breastfeeding.The effort hopefully will contribute to weight gain which take effect on the duration of treatment. The study design was Quasi Experiment with Prepost one group design. Samples were mothers with a history of low birth weight deliveries, with sample selection technique in consecutive sampling and sample number 36 babies. The samples criteria were infants birth weight between 1,000-2,100 gr, weight of infant when KMC was started between 900-2,100 gr, weight of infants post KMC were 1,300-2,500 gr, babies born with premature or small period of pregnancy. KMC method has the potential to improve the Weight on Low Birth Weight (LBW).Duration of KMC has no effect on weight gain but can accelerate the length of LBW in hospital. The longer do KMC, the shorter duration of hospital LBW in hospital. LBW should be treated KMC to accelerate weight gain and reducing the length of hospitalization. 
Volume: 7
Issue: 2
Page: 91-96
Publish at: 2018-06-01

Fine-Grained Overhead Characterisation of Cross-ISA DBTO for Multicore Processor

10.11591/ijeecs.v10.i3.pp1036-1044
Joo-On Ooi , Fawnizu Azmadi Hussin , Mohd. Nordin Zakaria
The emergence of modern portable software, start to behaved hybrid short-long running combined applications, in which an active apps may invoked others to fulfill task requirements. Thus the implementation of Dynamic Translation and Optimisation (DBTO) into heterogeneous multicore system-on-chip (SoC) will require careful re-study, to ensure efficient usage of most available cores. In order to improve efficiency in supporting this Instruction Set Architecture (ISA) diversity of computing platforms, mix modes of statically and dynamically Binary Translation and Optimization system, or DBTO, need to utilize concurrent compilation techniques, to better service the combined applications processing. This research deep dived into finer-grained DBTO overhead analysis, to provide categorization and characterization of overhead sources in breakdown stages during concurrent instruction processing. A dual-engine of translation and optimization is constructed for finer managemnt of start-up overheads. Helper functions, i.e. LoadLink/StoreCondition (LL/SC) are derived from atomic instructions, to create multiple helper thread supported by multiple host cores, for better instruction translation and optimization operation concurrently. Our experiment platform, evaluated through PARSEC-3.0 benchmark suite, shows performance improvement approaching 2.0x for apps based programs and 1.25x for kernel based programs, for x86 to X86-64 emulation. This technique possess great potential and serve as research based platform for future binary translation technique development, including adaptive method.
Volume: 10
Issue: 3
Page: 1036-1044
Publish at: 2018-06-01
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